<template>
    <div id="app">
        <el-form inline :model="data" :rules="rules" ref="form">
            <el-form-item label="审批人" prop="user">
                <el-input v-model="data.user" placeholder="审批人"></el-input>
            </el-form-item>
            <el-form-item label="活动区域">
                <el-select v-model="data.region" placeholder="活动区域">
                    <el-option label="区域一" value="shanghai"></el-option>
                    <el-option label="区域二" value="beijing"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="onSubmit">查询</el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
    export default {
        name: 'app',
        data() {
            const userValidator = (rule, value, callback) => {
                if (value.length > 3) {
                    callback()
                } else {
                    callback(new Error('用户名长度必须大于3'))
                }
            }
            return {
                data: {
                    user: '',
                    region: ''
                },
                rules: {
                    user: [
                        { required: true, trigger: 'change', message: '用户名必须录入' },
                        { validator: userValidator, trigger: 'change' }
                    ]
                }
            }
        },
        methods: {
            onSubmit() {
                console.log(this.data)
                this.$refs.form.validate((isValid, errors)=>{
                    console.log(isValid, errors )
                })
            }
        }
    }
</script>